80 lp/mm multiplies out to a 2000x3000 pixel image, roughly 6 MP. If you are old enough to have stood near a projection screen, you would know slide film resolution to be ... underwhelming at close range. Youngsters (relatively speaking) will have to rely on a 10x magnifier. This is not to detract from the appearance of Velvia. The colors and contrast are striking, and nearly impossible to emulate with a digital camera. On the other hand, colors in a digital copy of Velvia are true to the original, sometimes better (e.g., shadow detail and white balance). The term "line pairs" is misleading. Resolution is measured by examining the space between two parallel lines. Two lines = one space = one pixel.